New acid 5-carboxylic aminotetrahidroquinolin-2 and its use

Compound of formula (I) ** ** Formula wherein R1 represents hydrogen or fluorine, L1 represents ethane-1,2-diyl or 1,4- phenylene, and A represents a group of the formula ** ** Formula wherein * indicates the attachment point to the rest of the respective molecule, L3 is a bond, -O-, -CH2-, -CH2-CH2- or -CH> = CH-, and R3C represents a substituent selected from the group fluorine, chlorine, bromine, cyano, (C1-C4), difluoromethyl, trifluoromethyl, (C1-C4), difluoromethoxy and trifluoromethoxy, and R3D represents a substituent selected from the group of hydrogen, fluorine, chlorine, bromine, cyano, (C1-C4), difluoromethyl, trifluoromethyl, (C1-C4), difluoromethoxy and trifluoromethoxy, and salts, solvatesand solvatesof salts.